Lucstar A/C O‑Ring & Gasket Seal Kit — 300 O‑rings & 100 Gaskets for R134a/R12, NBR + Organizer

Lucstar AC O‑Ring & Gasket Seal Kit provides a complete assortment of resilient NBR O‑rings and durable iron/NBR gaskets to reseal automotive A/C compressor ports and related fittings.

This kit collects common sizes used on R134a and R12 automotive air‑conditioning systems into one organized box so you can quickly replace worn seals during repair or maintenance. Components are made from nitrile rubber (NBR) and thickened iron-backed gaskets with burr‑free surfaces, engineered for resistance to oil, gasoline, and a wide temperature range. The set includes clearly labeled sizes and an organizer for fast selection on the bench or in the field.

What parts are included and how many of each will I get?

The kit contains 300 oil‑resistant NBR O‑rings across 24 sizes plus 100 iron‑backed gaskets in 12 common compressor port sizes, packaged in a compartmented organizer box. Each gasket and O‑ring quantity is intended to cover multiple repairs for most passenger and light‑truck systems.

• 300 O‑rings, 24 distinct sizes for broad coverage
• 100 gaskets in 12 universal compressor port sizes (examples: BC‑6002, BC‑6003, BC‑6005, BC‑170019)
• Organizer box for neat storage and quick access

How durable are the seals and what conditions can they handle?

Seals are molded from premium NBR nitrile rubber and backed by thickened iron gaskets where applicable, offering chemical resistance to refrigerant oil, gasoline, and many automotive fluids. The O‑rings are rated for operating temperatures from -40°F to 248°F, making them suitable for typical under‑hood and service‑bay environments.

• NBR material resists oil, fuel, and common automotive contaminants
• Temperature tolerance: approximately -40°F to 248°F (-40°C to 120°C)
• Thickened iron gaskets with smooth, burr‑free faces for reliable compressive sealing

Which systems and repairs is this kit best suited for?

This assortment is designed for automotive A/C compressor port reseals, hose and fitting replacements, and general sealing tasks on water pumps, faucets, pressure washers and small appliances. The variety of sizes covers many domestic and imported vehicles; always confirm specific part codes and sizes before installation.

• Automotive A/C systems using R134a or R12 refrigerants (compressor ports and fittings)
• General mechanical seals: pumps, valves, pressure washers, appliances
• Field service or home garage use with the included organizer box

How do I choose the correct gasket or O‑ring from the kit?

Identify the damaged seal on the component and match its inner/outer diameter to the size markings provided in the organizer. For compressor ports, compare the gasket code (e.g., BC‑6002) or measure the bore and thickness; O‑rings are matched by cross‑section and inner diameter for a correct squeeze fit.

• Use calipers or a sizing template to match diameters and cross‑sections
• Consult vehicle service literature for compressor port codes and specifications
• Install new seals cleanly—ensure mating surfaces are free of debris and corrosion

Who this is for: This Lucstar sealing kit suits professional technicians, mobile A/C service providers, and DIY mechanics who want a comprehensive, organized selection of O‑rings and compressor gaskets on hand. It’s ideal for workshops that service multiple vehicle makes and for anyone needing reliable, oil‑resistant seals for automotive and light‑industrial repairs.